Prof Örjan Gustafsson
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Contracts (30)
Collaborating with (27)
A powerful molecular-isotopic approach to source apportion anthropogenic black carbon aerosols: microscale radiocarbon (14C) measurements to distinguish fossil fuel combustion from biomass burning
Period: 1/1/07 - 12/31/09
Atmospheric black carbon (BC), a.k.a. soot; the carbonaceous particles formed during incomplete combustion, is the Dark Horse in the current climate debate. The IPCC ranks the level of scientific understanding as Very Low for the important climate forcing effect of BC. Perhaps the most urgent ...
Activation of old carbon from thawing permafrost in Arctic Siberia
Period: 1/5/14 - 1/5/16
The most important mechanism in the earth system that could move significant quantities of green house gases into theatmosphere within this century is thawing permafrost. The potential for carbon release from thawing permafrost to affectglobal-climate links is realized from the sheer magnitude of ...
Apportionment of natural versus anthropogenic sources of halocarbons depleting Arctic ozone: Novel applications of powerful halocarbon-specific analysis of d37Cl, d81Br and D14C isotopes
Period: 1/1/08 - 12/31/10
Halogenated volatile organic compounds (HVOC) such as CH3Br, CH3Cl and CHBr3 have a mix of natural and anthropogenic sources and stand for a poorly constrained contribution (25-50%?) of halogen-induced ozone depletion in the Arctic atmosphere. Source-diagnostic dual-isotopic fingerprint of these ...
Assessing black carbon emission sources at climate impact hot spots regions
Period: 7/2/12 - 12/31/13
Incomplete combustion of different materials, such as petroleum, coal and wood, produces black carbon (BC) that is emitted into the atmosphere. Atmospheric black carbon contributes to a climate warming in the range of 20-70% of carbon dioxide. Major uncertainties with respect to the climate effects ...
Assessing large-scale environmental risks with tested methods
Period: 2/1/04 - 1/31/09
Based on a better understanding of terrestrial and freshwater biodiversity and ecosystem functioning ALARM will develop and test methods and protocols for the assessment of large-scale environmental risks in order to minimise negative direct and indirect human impacts. Research will focus on ...
Climate and health-afflicting “Brown Air” in northern India: evaluation of sources, advise on mitigation options and advocacy for action
Period: 1/1/10 - 12/31/12
The Brown Air, resulting from inefficient combustion by traffic, woodfuel burning etc, blankets northern India in the winter and causes severe effects on both the regional climate and the air people breathe. The overarching aim is to contribute towards the reduction in emissions of key Brown Air ...
Contaminant-specific isotope analyses as sharp environmental-forensics tools for site characterisation
Period: 2/1/09 - 1/31/12
Conventional remediation-monitoring programmes, i.e. analysis of contaminant and metabolite concentrations over time and space, often provide inconclusive assessments due to inability to resolve among mixing of several contaminant sources, degradation, dispersion and other redistribution processes. ...
DEFROST Nordic Centre of Excellence
Period: 11/1/10 - 10/31/15
The recent years have seen a number of dramatic changes in the Arctic cryosphere. Some of these changes have exceeded the most aggressive projections, such as the record melt of sea ice in summer 2007, the major melt off around the edges of the Greenland Ice Sheet and extensive and previously ...